Experimental study on local buckling of 800 MPa HSS welded I-section columns under axial compression

Cao, Xinde; Zhao, Geng; Kong, Zhengyi; Shen, Hao; Cheng, Chao; Chen, Zongping; Kim, Seung-Eock

doi:10.1016/j.tws.2020.106878

Cited by 20 publications

(2 citation statements)

References 18 publications

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“…S960). To date, a series of investigations (Cao et al, 2020;Shi et al, 2014Shi et al, , 2015Su et al, 2021a;Sun et al, 2019) have been carried out to study the crosssectional behaviour and design of HSS welded I-section stub columns made of steel grades up to 960 MPa. Regarding welded I-sections under combined loading, Sun et al (2021) investigated the cross-sectional behaviour of S690 non-slender (i.e.…”

Section: Introductionmentioning

confidence: 99%

Cross-sectional behaviour and design of normal and high strength steel welded I-sections under compression and uniaxial bending

Zhu

Yun

Gardner

2023

Advances in Structural Engineering

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A comprehensive numerical investigation into the cross-sectional behaviour and ultimate capacity of non-slender welded I-sections, made of both normal and high strength steels (NSS and HSS), under combined compression and uniaxial bending is presented. Finite element (FE) models were initially established and validated against test results collected from the literature. Subsequently, parametric studies were conducted using the validated FE models to generate extensive numerical data considering different steel grades, cross-section geometries and loading combinations. The obtained numerical data, together with the test results collected from the literature, were utilised to assess the accuracy of the traditional European (EC3) and North American (AISC) design provisions, as well as the Continuous Strength Method (CSM), for NSS and HSS welded I-sections under combined loading. The assessment indicated that the CSM was able to provide more accurate and consistent resistance predictions than the current EC3 and AISC design provisions owing to its ability to capture the spread of plasticity and strain hardening in a systematic, mechanics-based manner. Finally, the reliability levels of the different design methods were statistically evaluated in accordance with EN 1990:2002.

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Section: Introductionmentioning

confidence: 99%

Cross-sectional behaviour and design of normal and high strength steel welded I-sections under compression and uniaxial bending

Zhu

Yun

Gardner

2023

Advances in Structural Engineering

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“…Studies on the buckling performance of HSS welded I-section compression members have been conducted to serve the engineering practice. For the overall buckling performance, experimental studies of 460 MPa [1,2], 690 MPa [3], 800 MPa [4], and 960 MPa [5,6] I-section columns have been carried out to investigate the overall buckling reduction factor and the application of existing design standards. For the local buckling study, the experimental steel grades included 460 MPa [7] and 960 MPa [8], the achievement of which mainly focused on the ratio limit of width to thickness, section classi cation, and assessment of the resistance.…”

Section: Introductionmentioning

confidence: 99%

In-Plane Interactive Buckling of High Strength Steel Welded Wide Web I-Section Beam-Columns

Liang

Huang

2022

Advances in Materials Science and Engineering

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A numerical investigation on the overall-local interactive buckling performance of high strength steel (HSS) wide web I-section members was conducted using finite element (FE) models verified against experimental data. The effect of overall slenderness, the height-thickness ratio of the web h w / t w , and the width-thickness ratio of the flanges (bf/tf) on ultimate load was parametrically analyzed. The result demonstrated that (i) for the beam-columns with higher steel grade, the Pz-Uz curve presents a relatively obvious deformation plateau, meaning a certain degree of ductility. (ii) The ultimate load decreased essentially linearly resulting from higher h w / t w , and the trend was graphically consistent under various steel grades. (iii) bf/tf lower than 0.6 led to the failure mode of shearing buckling, and the corresponding ultimate load increased with an increase of bf/tf. In the case of bf/tf greater than 0.6, the ultimate load decreased as a result of the higher bf/tf. Based on the concept of the direct strength method, the local postbuckling strength prediction formula was fitted with stub beam-column FE results and examined with experiment data. The correlation formula of compression and bending moment was proposed to evaluate the resistance of the interactive buckling of the HSS wide web I-section underpinned by the FE results of beam-columns with intermediate length and experiment data.

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A Cluster and Search Stacking Algorithm (CSSA) for predicting the ultimate bearing capacity of an HSS column

Zhao

Peng²,

Han³

et al. 2023

Acta Mech

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Experimental study on local buckling of 800 MPa HSS welded I-section columns under axial compression

Cited by 20 publications

References 18 publications

Cross-sectional behaviour and design of normal and high strength steel welded I-sections under compression and uniaxial bending

Cross-sectional behaviour and design of normal and high strength steel welded I-sections under compression and uniaxial bending

In-Plane Interactive Buckling of High Strength Steel Welded Wide Web I-Section Beam-Columns

A Cluster and Search Stacking Algorithm (CSSA) for predicting the ultimate bearing capacity of an HSS column

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